... 跟踪编码经纬仪：tracking encoded theodolite 跟位孔：spacing hole 跟随调焦装置：follow focus attachment ...
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hole spacing 钻孔距离 ; 井距 ; 孔距 ; 炮孔间距
conductor to hole spacing 导体孔间隔
pin hole spacing 销孔间距
feed hole spacing 输送孔间隔
spacing of crown hole 拱顶炮孔间距
hole spacing pattern parameter 孔网参数
feed-hole spacing 输送孔间隔
By varying the groove spacing, the diameter of the single or double diameter hole, and the rear air cavity depth and content, one can obtain absorption over a wide variety of frequencies.
通过改变槽间距，直径的单人或双人直径孔，与后方空气腔的深度和内容，就可以得到吸收超过各种各样的频率。
An example is a bolt hole circle, in which the diameter of the bolt circle, the spacing of thebolt holes, and other parameters must be specified.
例如螺栓孔圆形，螺栓圈的直径，其中必须指定螺栓孔和其他参数的间距。
Supporting the use of impact drilling electric drill. Drilling, hole spacing with hole depth should meet the design requirements.
钻孔使用配套冲击电钻。钻孔时，孔洞间距与孔洞深度应满足设计要求。
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